Wall mount a tv

I want to mount a LCD TV on my wall in the corner. What should I do first? Also, where can I find a wall mount and what is the average price for a wall mount?

my name is lacy. I live in oklahoma and I currently just switched jobs. any ways I worked for cutting edge communications in norman, okla. and we retty much did around 60% of the churches in okla sound systems proj. screens and surround sound. my boss literally knew evrything there was to know about wall mounts and the things listed above. he can get em pretty cheap it all just varies nased on the tv size and what kind of wall your going to put it on like they have ones for outside or inside.
any ways he can hook you up and he does ship things out so he would do that.
405-701-5615
they have a toll free number but I cant remember it its like
888-pixels-1 I could be wrong on that so dont qoute me. lol. but I know the 405 number is correct. lol. and if you dont want to go through all that walmart has them just about as cheap as any one else...